[ledeviateur]

I have an 85 2 door that has been getting a major overhaul since importing from Spain. A reconditioned steering unit was installed but it doesn't assist at low (idle) rpm. I have read of problems with cars that have an ECU but I believe this car does not have one. Are there any tricks like changing pulley size or fluid type ?

 

[95classiclwb]

there are 3 major components to a steering system, a box, a pump and the reservoir. secondary are belts hoses dampers etc.
you need to have the proper fluid and amount in the reservoir, regular P/S fluid versus auto trans fluid.
system must be fully purged of all air, belt must be properly tensioned, pump fully operational, proper damper I/E not too stiff.
if these basic but major items are functioning well you have p/s, any of them fail and no p/s.
have your mechanic test pump output pressures, you may have a defective pump.